PMID: 1201695Nov 21, 1975Paper

On slit-lamp microscopy

Documenta Ophthalmologica. Advances in Ophthalmology
T A Schmidt

Abstract

Theoretically the contact lens with a refractive power of -64 dioptres is superior to the concave pre-set lens (Hruby lens) or the convex lens (Bayadi). In practice the results are as follows: With the convex lens the examination of the vitreous is unsatisfactory. The reversed image with the convex lens will become familiar with some experience as one will also get used to the mirror images of the three-mirror contact lens. However, the abnormal curvature of the image is really a nuisance. On the other hand the large field of view is an advantage. The convex lens is only practically useful when it can be firmly attached to the slit-lamp microscope, as otherwise the new adjustment necessary for searching the fundus is too difficult. Attachment to the microscope is also of advantage with the Hruby lens. The concave contact lens of 64 dioptres is best suited for detailed examination of vitreous and fundus and for measurements. When no value is placed on a minute examination and a quick simple orientation suffices, the concave pre-set lens (Hruby lens) has the advantage that the lens does not have to be placed on the eye. If it is centred to the middle axis of the microscope, it facilitates especially quick observation. There will ...Continue Reading

Citations

Dec 24, 1997·The Journal of Emergency Medicine·P S Juang, P Rosen
Mar 1, 1978·Australian Veterinary Journal·D H Slatter
Feb 5, 2009·Journal of Medical Biography·Andrzej WincewiczStanislaw Sulkowski
May 24, 2007·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·F MantwillCh Jürgens

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